Does seperate few nodules of tumor away from the cancer means was thru bloodstream?

Not necessarily: We need a little more information to answer this. Are you referring to nodules outside the organ of origin or smaller nodules near the tumor in the organ of origin. In the former situation, this implies spread via the circulation; in the latter situation, these "satellite" nodules grow by direct extension from the tumor.

No: No, this could indicate local invasion (tumor growing directly through the tissue), lymphatic spread (through the lymph nodes), or through the blood stream.